Radeon Instinct MI300X vs GeForce 8400 GS

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking1256not rated
Place by popularitynot in top-100not in top-100
Power efficiency0.69no data
ArchitectureTesla (2006−2010)CDNA 3.0 (2023−2024)
GPU code nameG86Aqua Vanjaram
Market segmentDesktopWorkstation
Release date17 April 2007 (17 years ago)6 December 2023 (1 year ago)
Launch price (MSRP)$29.99 no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores1619456
Core clock speed459 MHz1000 MHz
Boost clock speedno data2100 MHz
Number of transistors210 million153,000 million
Manufacturing process technology80 nm5 nm
Power consumption (TDP)40 Watt750 Watt
Texture fill rate3.6722,554
Floating-point processing power0.02938 TFLOPS81.72 TFLOPS
ROPs4no data
TMUs81216
Tensor Coresno data1216

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 1.0 x16PCIe 5.0 x16
Length170 mmno data
Width1-slotOAM Module
Supplementary power connectorsNoneNone
SLI options+-

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeDDR2HBM3
Maximum RAM amount256 MB192 GB
Standard memory config per GPU256 MBno data
Memory bus width64 Bit8192 Bit
Memory clock speed400 MHz2525 MHz
Memory bandwidth6.4 GB/s5,171 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors1x DVI, 1x VGA, 1x S-VideoNo outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX11.1 (10_0)N/A
Shader Model4.0N/A
OpenGL2.1N/A
OpenCL1.13.0
VulkanN/AN/A
CUDA1.1-

Pros & cons summary


Recency 17 April 2007 6 December 2023
Maximum RAM amount 256 MB 192 GB
Chip lithography 80 nm 5 nm
Power consumption (TDP) 40 Watt 750 Watt

8400 GS has 1775% lower power consumption.

Instinct MI300X, on the other hand, has an age advantage of 16 years, a 76700% higher maximum VRAM amount, and a 1500% more advanced lithography process.

We couldn't decide between GeForce 8400 GS and Radeon Instinct MI300X. We've got no test results to judge.

Be aware that GeForce 8400 GS is a desktop card while Radeon Instinct MI300X is a workstation one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce 8400 GS
GeForce 8400 GS
AMD Radeon Instinct MI300X
Radeon Instinct MI300X

Comparisons with similar GPUs

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Community ratings

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3 632 votes

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Questions & comments

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